无码精品人妻一区二区三区,激情综合五月天开心久久,在线 日韩 一区 二区,久久精品不卡一区二区三区

Welcome to Fujian Yongjing Technology Co., Ltd. the website!

Contact us

Add: 18#, Xin'An Road, Shaowu City, Fujian, China
International Trade Dept.
Tel: +86-599-6655932/6654968
Fax: +86-599-6654591
Home Trade Dept. 
Tel: +86-599-6654866/6654968
Fax: +86-599-6655755
High-purity Chemicals Dept.
Tel: +86-599-6655536/6654968
Fax: +86-599-6655755


Products

Chemical Reagent Ammonium Bifluoride

Quality StandardGB/T 1278-1994

Molecular FormulaNH4HF2                             Molecular Weight57.05

Item

Index

A.R.

C.P.

Ammonium Bifluoride (NH4HF2)   w/%   ≥

98.0

97.0

Ignition residue(Sulfate) w/%   ≤

0.01

0.05

Chloride(Cl) w/%   ≤

0.001

0.005

Sulfate(以SO4計(jì))  w/%   ≤

0.005

0.01

Fluorosilicate(SIF6) w/%   ≤

0.2

0.5

Fe w/%   ≤

0.001

0.005

Heavy metal(Pb)  w/%   ≤

0.002

0.005

Properties
The product is a rhombohedra or flaky crystal. It can deliquesce easily and dissolve easily in water. It can dissolve in alcohol slightly. It can be resolved when it is affected by the heat or it is in hot water. It can corrode glass. It’s poisonous.
Application
The product can be used for glass frosting or extracting rare elements and used as a preservative or a mordant.
Storage
Moisture-proof and sealed preservation is needed.
Transport
It should be treated as inorganic poisonous goods.
Packing
The product is packed in a 25kg polythene plastic bag. Also pack it on consumer requests.

【Back】

Copyright(C)2017,Fujian Yongjing Technology Co., Ltd. All Rights Reserved. Supported by ChemNet ChinaChemNet Toocle Copyright Notice

高清清纯大学生国产在线| 999久久久国产精品网| 久久精品一区二区三区综合| 国产美女久久精品香蕉69| 亚洲福利在线观看视频网站| 久久人人妻人人爱人人爽| 亚洲精品无码网址你懂的| 黑色丝袜脚足国产在线看| 国产精品久久久免费观看| 亚洲欧美日韩 精品久久| 亚洲老妈激情一区二区三区| 爱无码在线视频| 国产中文成人精品久av| 中文字幕久久波多野结衣av| 十八禁在线永久免费观看| 日韩精品一区二区亚洲观看| 久久久免费视频精品一区| 露脸国产精品自产在线播| 久久的精品99精品66| 欧美在线视频| 亚洲国产美女精品久久久| 草草影院精品一区二区三区| 高清清纯大学生国产在线| 亚洲AV片不?无码久久| 欧美日韩亚洲国产精品视频| 国产午夜精品久久理论片| 精品色老头老太国产精品| 久久精品人妻一区二区蜜桃| 中文字幕日韩有码国产精品| 超碰成人福利人人爱精品| 人妻无码av久久一二三区| 久久久国产精品免费a片3d| 久久久久亚洲AV佐山爱| 日韩午夜理论免费tv影院| 欧美日韩免费观看在线影片| 欧美日韩国产综合一区精| 久久女人丝袜脚| 国产乱子伦在线观看视频| 久久久久久精品免费亚瑟| 永久免费av 在线观看| 日本丰满少妇一区二区三区|